CVE-2026-3609: Wellbia XIGNCODE3

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

Wellbia's XIGNCODE3 xhunter1.sys kernel driver, version 10.0.10011.16384 through 2023.12.7.78, privilege escalation vulnerability provides access to the IRP_MJ_WRITE command interface, which allows any user process to request a PROCESS_ALL_ACCESS. Note: KVE 2023-5589 (https://krcert.or.kr) was initially issued for version 10.0.10011.16384, but the vulnerability was not fully remediated and remains in version 2023.12.7.78.

Affected products

• Wellbia XIGNCODE3: version 10.0.10011.16384 only

Published 2026-05-11. Last modified 2026-08-05.